Okuma MA 400 Leaking Hydraulic Fluid

[bmckelvey]

Each time we shut the machine down and shut off the air it leaks about a gallon of hydraulic fluid. Any thoughts?

[Superman]

A bit more info required.

Where from ???? Hose/ joint, axis slide, 4th axis ?

[Algirdas]

one of my clients has the same issue with MA-500.
It is lake of hydraulic oil under the machine, under the table area.
I didn't find where from it leaks and have no idea how to

[zooloader]

Our MA 400 H is leaking hydraulic oil too.
Pooling on the floor under the tool magazine door 'round the back. The sight glass on the tank goes from max to min in 3 shifts.
After lots of looking I finally noticed oil coming out from one of the air diffusers(!) on the manifold that travels with the Z axis.
The leak is getting worse and has started coming from the table pull-studs when unclamped for pallet change.
It's not fixed yet, but appears that whatever seal(s) are busted is allowing the oil to return through the air lines.

[Superman]

I've noticed on our horizontal, the hyrdraulic oil is used quicker when the pallet changer is used, or when you enable a parameter to enable the rapid over-ride switch to control the swing of the pallet door/cradle when checking large set-ups.

The hydr. oil drains into the tramp oil gutters, and if the tramp oil has jellied up, it overflows - usually under the centre of the machine

Suggest that 1st you clean all of the gutters. It'll make a big mess, but it has to be clear ( I usually use HOT water to get it to flow )

This may control the leaking across the floor, and may allow you to back-track the leak

I find that our "small" leak is around the pallet changer centre-column area